#include<stdio.h>

int mian()
{
    int i,num1,num2,temp;
    printf("The fraction series with demominator 40 is :\n" );
    for(i=1;i<=40;i++)
    {
        num1=40;
        num2=i;
        while(num2!=0)
        {
            temp=num1%num2;
            num1=num2;
            num2=temp;
        }
        if(num1==1)
        printf("%d/40\n",i);
    }
}

//吴昌源